void setup() {

// initialize digital pin LED_BUILTIN as an output.

pinMode(9, OUTPUT); //Red Led

pinMode(10, OUTPUT); //Green Led

pinMode(11, OUTPUT); // Blue Led

}

// the loop function runs over and over again forever

void loop() {

int r=255;

int g=255;

int b=255;

while(r>=0){

analogWrite(9,r);

analogWrite(10,g);

analogWrite(11,b);

r -=5;

delay(100);

}

r=255;

while(g>=0){

analogWrite(9,r);

analogWrite(10,g);

analogWrite(11,b);

g -=5;

delay(100);

}

g=255;

while(b>=0){

analogWrite(9,r);

analogWrite(10,g);

analogWrite(11,b);

b -=5;

delay(100);

}

b=255;

}